Commitment to Safety • Reliable Results
Responsive Resources • Established Expertise
Penhall Technologies provides utility locating, employing both electromagnetic induction (EMI) and ground penetrating radar (GPR) for privately owned property. We can identify and locate subsurface hazards and obstructions existing in the ground. Reduce the risk and help ensure the safety of your next project by contacting Penhall Technologies for your private utility locating needs.
Richmond Utility Locating Projects that Penhall Worked On
Locate utilities before construction begins
Our Richmond, VA branch performed underground utility locating for a customer that wanted to build new structures in the area. He didn’t want to build on top of existing utilities, so he called Penhall Technologies to conduct the utility locate. Our analyst used the GSSI SIR 4000 Utility Cart to locate any utilities, followed by sweeps with the RD7100. The analyst found undetermined lines, possibly water lines, which she marked with pink flags. Additionally, all other utilities found were marked using the standard APWA (American Public Works Assoc.) color code.
Locate telecommunication lines with GPR
Recently, a farm owner contacted Penhall Technologies for utility locating. The property was approximately 200 acres in size and housed over 100 cows, 8 horses, and 10 dogs. The owner needed to trace a telecommunication line from one building to another building on opposite sides of the property. He also wanted to trace other electrical and gas lines exiting his residence. This was done in preparation for trenching out an area for a new telecommunication line. The client wanted to do this without striking any underground utilities. Using an electromagnetic device (RD 7100), the analyst accurately traced the telecommunication line. The line was located nearly a mile across the property. The analyst also mapped out the utilities exiting the residence with spray paint and flags.
Scan before installing new electric lines
Penhall Technologies performed utility locating and concrete scanning. The job consisted of locating rebar in a parking garage wall, conduits beside a garage gate, and utilities in the road and grass. The client was updating the gate system for the parking garage and need to install new electric lines. The client did not want to dig or drill into any existing lines. The analyst used the GSSI StructureScan Mini HR, SIR 4000 with the 400 MHz antenna, and RD 7100 to scan these areas. Results showed electrical conduits running beside the existing gates. In addition, he detected rebar and wire mesh in the garage wall.
Penhall locates electric and water lines
Penhall Technologies performed utility locating services to locate hazards in an area where site-work would take place for an existing apartment complex. The client needed to find any electrical, water, and/or gas lines that ran into the building. The analyst used the GSSI SIR 4000 with the 400 MHz antenna along with the RD7100 to locate the lines. After scanning, the results showed an electric line and a water line running into the area.
Penhall uses GPR to locate underground water and phone lines
Penhall Technologies located a water line and phone line that was thought to run into property line in a field. Our analyst used the GSSI SIR 4000 with a 400 MHz antenna to locate these lines. Results from the GPR showed a utility (probable water line) in the asphalt section of the street. The line traced up to the concrete curb going toward the field, the equipment did not detect it after the asphalt. Also, it couldn’t detect the line in the concrete curb nor in the field. The analyst detected the possible phone line, running parallel to the road alongside the curb. He marked it in pink spray paint to highlight its location and path.
GPR and Radio Detection used to locate several utilities before installing new water line
Penhall Technologies completed a project at the Strawberry Hill Pump Station in Richmond, Virginia. A customer needed to locate utilities around an existing vault prior to digging a trench to install a new water pipe. The analyst used a 400MHz GPR antenna to locate utilities to a depth of 7’ around the vault location. The customer wanted to confirm and locate any known and unknown utilities. To check for live conduits, the analyst used a utility wand to sweep each area for power and communication lines.
Ground Penetrating Radar used to locate an underground duct bank around a building
Penhall Technologies located a known duct bank around a building in Glen Allen, VA. A GSSI SIR 4000 with a 400 MHz antenna was use to scan the area, which was approximately 50ft X 50ft. Ground penetrating radar was able to show each edge of the duct bank to give an approximate width as well as the path it was going. Our GPR Analyst provided quick and reliable results. This helps our client move on with the electrical project on time.